Crafted from from water resistant pp, these set square with angles-measuring instrument multifunctional geometry measurement tool maintain calibration integrity through repeated use in academic, artistic, and technical environment Widely used for classroom geometry lessons, architectural drawing, engineering drafting, woodworking, sewing, art craft project, and professional engineering diagrams requiring precisely angles calculations This multifunctional set square protractor geometry measuring tool delivers precisely drafting with clear construction featuring centimeter and angles scales and precisely measuring markings for technical drawings Integrated parallel rulers and 45° / 90° angles guides simplify geometric constructions Enhancing your these drafting efficiency with these professional geometry drawing and measuring tool Suitable for architecture students completing technical drawings, engineers drawing precisely schematics, and artists crafting lined illustrations requiring measurement accuracy, Manufacturer: Obotsnoi